please post your recommendations here...

currently available factory loads only, please...

I think most would agree, B&P Comp1/ 7/8oz. I believe 1160 FPS. I also like and use Clever shells; you can find them around the same FPS loads in 7/8oz.
I shoot them both in my Purdey and Boss, no issues

I think the Winchester AA Xtra-lite Target loads were tested in they were less then 9K, 1180 FPS. https://www.midwayusa.com/product/2900171346

I found this on the forum from a few years ago:

AAHS Xtra-Lite Target 1 oz. AAL12 - 1,180 fps - 8,760 psi

Remember as has been stated before in a previous thread, commercial loads can switch up components such as powders from year to year to keep the same fps performance but not necessarily the same pressure. This maybe why Precision no longer will test factory loads as this exclusion from testing would eliminate a potential controversy of someone relying on last year's testing only to discover that this year's shells were too hot for the intended gun. Gil

makes sense, but what kinda deviation are we talkin about here?

maybe a couple ah hundred psi or so?

As long as a 12 ga. 2.75" shell is not specified to be low pressure, it can go up the SAAMI max of 11,500. I am not familiar with the lite load above and don't know if it is advertised as "low pressure". RST and Polywad were specified to be "low pressure" and they were. Gil

you tellin us that winchesters light loads could go from 8,760 up to 11,500 psl?

if so ,recoil in a 7 pound skeet gun would hurt like hell, and make one wonder if winchester ammo has quality control issues...

Golly Gee Wilikers....Sure would be useful if someone posted a table with manufacturers, pressures, oz of shot and FPS. Just saying.............

Gee, that would be great
The problem is that the data could well be inaccurate tomorrow as the makers change components. And the U.S. makers decline to share the infro.
But ed will ask again in a few weeks






SAAMI rules
Load weight variations can range from +4% to -7% in game loads and +3% to -5% in target loads; about +/- 1/8 oz. of variation allowed per shell.

Pellet counts per ounce can vary by +/- 10% for both game and target loads.

Load velocity can vary by +/- 90 fps for both game and target loads.

Load pressure - only specifies maximum average pressure for 2 3/4" and 3” shotgun shells will be 11,500 PSI +/- 900 psi, with some maximum extreme variability not to exceed an uber-max of 12,500 psi +/-900 psi
It MIGHT be assumed that loads in general do not vary more than 900 psi, and for low pressure loads likely less

The European makers mostly report speed and fps.
Be cautious as several have 7/8 oz. load with International Skeet and Trap fps
Rio Star Team EVO 12 Gauge 2.75" 7/8 oz is 1340 fps
https://www.ammunitiondepot.com/stt2475-rio-star-team-evo-12-gauge-2-75-7-8-oz-7-5-shot.html

So for the non-deep thinkin' amongst us, if we're trying to lower recoil or use 2 3/4" shells in short chambers - find a 7/8 oz. load at 1200 fps or less and stop worrying
IMHO if your gun can't handle 10,000 psi you probably shouldn't be using it, or should be reloading.

A great big Thank You!

Drew,
Your post on FPS. and pressures has been very helpful, many thanks!
Karl

I would love to know what powder is in those 1.25 oz RST phesant loads.

Happy to help gentlemen, but this is all old data.

Pre-pandemic I shot cases of the Kent Elite (made in USA) 12g 2 1/2" 3/4 oz. load, which I can't find anywhere now
https://huntstuff.com/k-elite-low-recoil-and-training/
https://www.impactguns.com/shotgun-...5-3-4oz-250rd-case-656308110011-e122l208

This might be worth a try
https://topammomag.com/product/kent-elite-low-recoil-training-12-ga-2-5-3-4oz-25rd-box/

Brent if you check the Alliant and Hodgdon website you can find 1 1/4 oz loads that are really close to the RST load with 572,Longshot, Blue Dot and Herco . Unique is also good but not quite as low. Federal Gold Medal hulls and Cheddite style hulls are the way to go. Lots of wad and primer choices.

I use Blue Dot and Longshot but I don't think my loads go quite that low. Part of my problem is using WinAA hulls and wads. Straight wall hulls seem to average a bit lower pressure in comparable loads.

The RST loads were looking almost like SRn7625, which I really like but is no longe made. I have about 2-3# left however.

like doc drew says...

if we're trying to lower recoil or use 2 3/4" shells in short chambers - find a 7/8 oz. load at 1200 fps or less and stop worrying smile...

agree, plus one ounce loads going out at 1200 fps or less should be safe as well...

also, if your gunsmith agrees, have him open those chambers to 2 3/4 and keep smilin...

keep it simple and keep it safe...

Oops

Drew,

If that is a British cartridge they might be referring to the Observed Velocity ( over 20 yards).

As the Chrony is not specked with shot I take it that the reading is muzzle velocity.

You are correct, muzzle vs 20 yds.

Any chance that reading is due to operator error? Bright light conditions, even with the sunscreen diffusers can give misleading readings. I've had bizarre readings with loads in such conditions. Gil

an as doc drew taught us, velocity and pressure are not necessarily related...

however, shot charge does directly affect both? ...

ah mean, the heavier the load, the more energy it takes to start pushing hit down the bore...

the more power applied, the higher the energy, which results in higher velocity...

and the more power applied, the higher the pressure, in a confined space, such as in a shotgun barrel?...

That image was posted quite some time ago on another forum, and is the 3 feet reading. The operator seemed confident of the results, but I don't recall how many shots he took.
Rio shells